Steam trap



Sept. 3, 1935. P, w BEGGS 2,013,433

STEAM TRAP Filed Oct. 10, 1932 frzz/enzor' Mil 71.655: PM 5 Patented Sept. 3, 1935 r I TED STAE-S ATENTQFFIQE STEAM TRAP Paul W. Beggs, Chicago, Ill., assignor to Jas. P. Marsh Corporation, Chicago, 111., a corporation of Illinois Application October 10, 1932, Serial No. 637,140

2 Claims. (Cl. 23653) The invention relates to traps and primarily Fig. 2 is a section taken on line 22 of Fig. 1 to that type which is capable of association and looking in the direction of the arrows. use with heating or other systems and operates The structure illustrated contemplates the to allow the escape of noncondensable gases thereutilization of a hollow element H) which forms a from and to trap condensate and discharge same Chamber ll av n a flui inlet Opening d 5 after a predetermined amount of condensate has a fluid outlet openi 3- e mem e '0 is accumulated in the trap. further provided with a threaded opening IQ for It is one of the prime objects of the invention e reception of a p 01081118 [5 which provides to arrange the elements of the structure relativemea or supporting a tempe at p s V 1 1y to each other so that a compact device is prodevice such as I6.

duced which thus permits a device such as above e structure contemplates the use Of a fitting referred to, to be employed in instances now progenerally design d haVihg a b a d hibited. threaded extension [9, the boss being adapted It is an object of the inv tion provide to be located in the outlet opening l3 and be held trap with means for trapping and controlling the iherein by means of hilt U which s threaded 15 flow of condensate therefrom, having temperaupon the extension H] to hold the fitting I? withture responsive means combined therewith which in the Chamber It s d r ood that the functions to permit the escape of steam, yet will threaded portion 19 0f the fitting s p v ded allow the escape of air and non-condensable gases with D e 2| W ch communicates with the 20 until this is prohibited by the temperature of the Outlet opening generally d s nated 13. 20 steam. The fitting IT is comprised of a vertically ex- It is an object of the invention to provide a tending tubular air vent member or element 22 fitting having elements, ach of hi h h and a horizontally extending drain member or passage, one of said elements having a valve porelement 23. The element 23 has a fluid passage tion through which liquid may flow from the d 24 formed therein which communicates with the 25 vice to and through the outl t opemng t passage 2! of the threaded extension i9. It will the other element of the fitting having an air be noted that the vertically disposed element 22 passage which provides a guide for an element for is of tubular formation and thus provides a p actuating a valve element which cooperates with sage 25 which also Communicates with the D said valve portion. sage 2| provided in the threaded extension [9. 30

It is another object of the invention to employ The element 23 is Provided with a Valve seat 26 a structure such as that just referred to and comand in addition thereto Provides a upp t or a blue a temperature responsive means therewith, level 27 which is pivoted at 23 and is P v de the latter being arranged relatively to the element w a a v element 29 which p tes with having the air passage so th t the temperature the valve seat 26 formed in the element 23. 35 responsive means may function to control the A float 39 is supported movement g passage of air through said passage. tudinally of the element 22, the float being lim- In addition to the above, it i n object, t ited in its movementinone direction through the provide means for adjusting the temperature reagency Of a p 3| s d to sa d element 22.

40 ponsive means SQ that the te1npe1-atm-e re on- The float 311 has a. tubular extension 32 and this 40 sive means may be arranged to regulate escape of extension has an annular flange 33 which is deair through the air passage signed to be located in the forked end 34 of the The invention has these and other objects, an lever 2'! to thus form a connection between this of which will be explained in detail and more lever 21 and the float which manifestly will, upon readily understood when read in conjunction with movement of the float longitudinally of the tubuthe accompanying drawing which illustrates one lar element 22, transmit this motion to the valve embodiment of which the invention is susceptible, g f ggz f g g g i ggs gg g gig g irigggi it being manifest that changes and modifications may be resorted to Without departing from the regulate the amount of mud fiowmg through the z passage 24 from the chamber H. i the appendedclalms fol'mlng part The upper end of the tubular element 22 is ereo th formed to provide a valve seat 35 with which the In e drawmg, valve element 36 is adapted to cooperate to regu- Fig. 1 1s a central longitudinal section of a trap late the flow of air from the chamber I I through embodying the invention; and the passage 25 and through the outlet l3. This 55 valve element 36 is part of the temperature responsive device generally designated 16 which is susceptible to temperature changes of the fluid contained in the chamber H and therefore will function to open and close the valve formed by the valve portions 35 and 36 and may function to completely close the valve when the temperature of the fluid such as steam entering the chamber I l is sufficiently high to cause this actuation. Manifestly, when steam of a certain temperature enters the chamber H, the temperature responsive means 85 will expand and function to close the valve just referred to and trap the steam in the chamber II.

The temperature responsive device generally designated it has a threaded extension 37 which is threadedly connected with the inwardly projecting boss 38. It Will be noted that the threaded projection 3'7 is provided with a slot 39 and, therefore, will accept a screw driver or other similar instrument and thus allow the temperature responsive means generally designated I5 and the valve element 35 to be moved with respect to the valve seat 35 and thereby regulate the valve element 3% so that it may function at difierent temperatures. A set nut H3 is also employed to hold the temperature responsive device in any one of its adjusted positions.

From the foregoing description of the structure, it is believed evident that a simple and compact device is produced which will function to trap condensate therein and which when the quantity thereof reaches a certain predetermined amount, will operate to discharge or release the condensate therefrom. It is also manifest that the temperature responsive element will function to allow the escape of fluid such as air or noncondensible gases from the chamber l I and that as steam is introduced to the chamber H, this temperature responsive element will be actuated and function to prevent the further escape-of air from the chamber.

It will be noted that the float 3B is mounted for operation along the element 22 and that this element 22 is connected with the element23 as is the arm 27 and thus a unit is provided which may be readily introduced and removed from the chamber II and be mounted in the outlet opening l3 and held in functionally operative position within the chamber.

Having thus described my invention, What I claim and desire to cover by Letters Patent is:

1. In a device of the class described, the combination of a housing having inlet and outlet ports formed therein, a drain member mounted in said housing and having a passage communieating with the interior thereof and with said outlet port, a valve seat adjacent one end of said drain member, an arm pivotally mounted on said member adjacent said seat, a valve mounted on said arm and cooperable with said seat, a tubular air vent member mounted in said drain memher and having a passage communicating with the passage formed in the drain member, a float slidably mounted on said vent member and 0peratively related to said arm for actuating said valve, and temperature responsive means mounted in said housing and operatively related to said vent member for closing the passage therethrough.

2. In a device of the class described, the combination of an open ended housing having inlet and outlet ports formed therein, a drain member mounted in said housing and having a horizontally disposed passage communicating with the interior of the housing and with said outlet port, a closure for the open end of said housing, a valve seat adjacent one end of said drain member, an arm pivotally mounted on said 'member adjacent said seat, a valve mounted on said arm adjacent for actuating said valve, and temperature re-.

sponsive means adjustably mounted in said closure and operatively related to said vent member for closing the passage therethrough. V

, PAUL W. BEGGS. r 

